为基于Spring Cloud Netflix的Eureka服务器设置对等感知

Question

我使用Spring Cloud Netflix构建了一个Eureka服务器。服务器正在工作，因此我目前正在尝试添加第二个Eureka服务器，以提高弹性，并在更新服务器时提供备用服务器。

http://cloud.spring.io/spring-cloud-netflix/spring-cloud-netflix.html这听起来很简单：你只需要像Eureka客户端一样配置你的服务器。因此，我将其添加到引导程序中。客户端的yml配置：

eureka:
    client:
        serviceUrl:
            defaultZone: http://user:password@172.31.7.240:8762/eureka/

据我所知，这与我的其他eureka客户端当前使用的配置相同。所以我认为这是可行的。但我得到了一个奇怪的例外：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'discoveryManagerIntitializer': Injection of autowired dependencies failed; nested exception is     org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.netflix.discovery.EurekaClientConfig org.springframework.cloud.netflix.eureka.DiscoveryManagerInitializer.clientConfig; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'eurekaClientConfigBean': Could not bind properties to [unknown] (target=eureka.client, ignoreInvalidFields=false, ignoreUnknownFields=true, ignoreNestedProperties=false); nested exception is org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 2 errors
Field error in object 'eureka.client' on field 'serviceUrl': rejected value [http://user:password@172.31.7.240:8762/eureka/]; codes [typeMismatch.eureka.client.serviceUrl,typeMismatch.serviceUrl,typeMismatch.java.util.Map,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [eureka.client.serviceUrl,serviceUrl]; arguments []; default message [serviceUrl]]; default message [Failed to convert property value of type 'java.lang.String' to required type 'java.util.Map' for property 'serviceUrl'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [java.lang.String] to required type [java.util.Map] for property 'serviceUrl': no matching editors or conversion strategy found]
Field error in object 'eureka.client' on field 'serviceUrl': rejected value [http://user:password@172.31.7.240:8762/eureka/]; codes [typeMismatch.eureka.client.serviceUrl,typeMismatch.serviceUrl,typeMismatch.java.util.Map,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [eureka.client.serviceUrl,serviceUrl]; arguments []; default message [serviceUrl]]; default message [Failed to convert property value of type 'java.lang.String' to required type 'java.util.Map' for property 'serviceUrl'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [java.lang.String] to required type [java.util.Map] for property 'serviceUrl': no matching editors or conversion strategy found]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1202)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:957)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:946)
    at com.emnos.registry.RegistryApplication.main(RegistryApplication.java:18)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:53)
    at java.lang.Thread.run(Thread.java:745)

很明显，我的URL实际上是从配置中读取的（在异常中显示）。但看起来它的分析不正确。异常告诉我我正在为eureka使用字符串。客户当我应该使用地图时的服务URL。但事实上，我使用了一个带有键值对的映射：http://user:password@172.31.7.240:8762/尤里卡/ 。

以前有没有人见过这样的例外，能告诉我我做错了什么？正如我所知，我使用的语法与Spring文档中使用的语法完全相同。

编辑：

我刚刚更新到Spring Boot 1.2.3。发布和Spring Cloud Netflix 1.0.1。所以我应该使用最新版本。

Answer 1

在DaveSyer的评论表上找到了答案。

事实上还有另一个属性来源：环境变量。在无意中覆盖YAML中的配置时，定义了一个名为EUREKA\U CLIENT\U SERVICE\U URL的变量。删除/重命名此变量后，一切都开始工作。